These are very strange measuring results, especially the different reference points (Vdd/Vss) irritate me. E.g. for the SC check I’m not sure, if voltages are measured against Vdd or Vss, or if you mixed the reference points so that you always get ca. 5V…
Please only measure against Vss (ground)
And do this check with and without connected DOUT/DIN modules (without the modules only the selected line should be at ca. 5V, all other lines should be 0V)
The voltages are ok. I think that you are just mixing “DO” (for Data-Out) with “D0” (for Dataline Zero)
On the DINX4 board, the D0 line is an input, which is pulled up via 10k to +5V. So, the measured voltage level is as expected, and the module interconnections are ok.
I don’t knwow aht line is the D O, but D0 is pin 11 according to the DINx4 diagram, so that’s what i measured.
Looking at the diagram, there’s 5v going through a resistor to pin 11, so if you connect that to ground, it should always be 5v, so no surprises there i guess.
Now what bothers me is, with all these voltages correct… why do the buttons not work…
i have tried numerous alternatives…
when a button is depressed, it’s connecting a ground to the 5v coming in through the resistor, right? essentially, supplying 5v to the data register, i guess signifiying an “on”.
So i’;ve disconnected all my buttons..
when i load sid 1.7 software, i should be able to access the menu by grounding D2 of the 2nd IC…
pin 13
i will do that and see if i get the menu this time…
However, i got the number 3 appearing next to Chn1
i have a revision 3 din module, so i followed to corrected pinout, rather than the pinout shown on the board..
I will upload midio128 right now
question, when i click menu, what should I see?
when I click D2 on j3, i see the next patch, and a message that no bankstick is present (so the patch is empty)
SOO much more exciting than yesterday, when i could not get ANYTHING happening!!!
EDIT=====
I uploaded it, can create midi notes from the pins of the chips.. however, which notes should correspond to which buttons for the SID module i wonder.. i don’t think i have it right, even with the corrected pinout.. somehow..
hmm
====EDIT ====
each D pin gives me, in order, the next note, chrmatically from C2 to G4
so it works…
the DIn + core are connected properly. excellent..
